." >> ifill: from sudan, an on-the-ground report on new clashes as the southern part of the country prepares for independence saturday. >> brown: and ray suarez talks to david epstein of "sports illustrated," as former pitching great roger clemens faces charges of lying to congress about taking performance- enhancing drugs. that's all ahead on tonight's "newshour." major funding for the pbs newshour has been provided by: >> i mean, where would we be without small businesses? >> we need small businesses. >> they're the ones that help drive growth. >> like electricians, mechanics, carpenters. >> they strengthen our communities. >> every year, chevron spends billions with small businesses. that goes right to the heart of local communities, providing jobs, keeping people at work. they depend on us. >> the economy depends on them. >> and we depend on them. >> and by the bill and melinda gates foundation. dedicated to the idea that all people deserve the chance to live a healthy productive life. and with the ongoing support of these institutions and foundations. and... this program was made possib